86576681 has 2 divisors, whose sum is σ = 86576682. Its totient is φ = 86576680.

The previous prime is 86576647. The next prime is 86576689. The reversal of 86576681 is 18667568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80281600 + 6295081 = 8960^2 + 2509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86576681 is a prime.

It is a super-2 number, since 2×86576681² = 14991043385951522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86576689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43288340 + 43288341.

It is an arithmetic number, because the mean of its divisors is an integer number (43288341).

Almost surely, 2^86576681 is an apocalyptic number.

It is an amenable number.

86576681 is a deficient number, since it is larger than the sum of its proper divisors (1).

86576681 is an equidigital number, since it uses as much as digits as its factorization.

86576681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 86576681 is about 9304.6591017619. The cubic root of 86576681 is about 442.3849165009.

The spelling of 86576681 in words is "eighty-six million, five hundred seventy-six thousand, six hundred eighty-one".